I have my machine mounted to torsion beams so I can level it easily and I have made several modifications to the bed and machine. My shop is on a steel frame sitting on a bed of rocks and this land use to be farm land and is still settling so my shop moves every time it rains ... or doesn't rain.
This is the jig I made. It mounts below the machine in a slotted block so it can be quickly adjusted to change the angle by loosening the knob and sliding the block in or out. The arms can be adjusted with a screw driver if needed. At the top it has t-bolts that slide into the rails and tightens down with knobs. The guitar neck clamps to the upper arm and I use a tilt box to level up the head stock. Then zero on the head stock and cut the pocket for the inlay. Then un-clamp the neck and hand it to the owner as he hands me the money.
Your BRAIN Is The Most Important Power Tool In Your Shop. Turn It On Before You Turn On Any Other Power Tool.
A Disability Is Only A Disability If You Let It Be One